Performance Specifications |
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Parameter |
Specifications |
Material |
Grade A fine annealed crown and flint glass, or as
specified |
Design Wavelength |
Customer specification |
Diameter Tolerance |
± 0.25mm |
Paraxical Focal Length |
± 5% at 546.1 nm |
Centration |
± 3 arc minutes |
Center Thickness |
± 0.25mm |
Clear Aperture |
90% of the diameter |
Scratch and dig |
60-40, 40-20, up to 10-5 upon request |
Circumference |
Fine ground, slight protective bevel for both edges |
AR Coating |
MgF2, visible wavelength, or as specified |
Customeized Specs |
Available upon request as per drawing |
Spectral Chart |
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